TWI461639B - Combustion heater - Google Patents

Description

Burning heater

The present invention relates to a combustion heater for burning a fuel to heat an object to be heated. The present application claims priority based on Japanese Patent Application No. 2011-163865, filed on Jan. 27, 2011, the entire disclosure of which is incorporated herein.

Conventionally, a conventionally widely used combustion heater heats a radiator by combustion heat that burns fuel gas, and heats industrial materials, foods, and the like by radiant heat from a radiation surface of the radiator.

Regarding such a combustion heater, for example, a technique for improving the heat efficiency has been proposed, which is to design from an introduction path for guiding the fuel gas to the combustion chamber to a discharge path for guiding the combustion in the combustion chamber to the outside of the body. In the closed structure, the introduction path is adjacent to the lead-out path, and the fuel gas before combustion is preheated by the heat of the exhaust gas (see, for example, Patent Document 1).

(previous technical literature) (Patent Literature)

Patent Document 1: Japanese Laid-Open Patent Publication No. 4494346.

In the combustion heater of Patent Document 1, the heat efficiency can be improved by improving the warm-up effect of the fuel gas. It can be inferred that the partition plates separating the introduction path and the export path are thinned to enhance the combustion from the exhaust gas. The heat transfer efficiency of the feed gas improves the preheating effect. However, when the partition plate is thinned, the partition plate is thermally deformed, and the introduction path and the lead-out path are deformed so that the fuel gas cannot be uniformly supplied to the combustion chamber, or the exhaust gas cannot be sufficiently discharged. The adverse effect of reducing combustion efficiency.

The present invention has been made in view of the above problems, and an object thereof is to provide a combustion heater capable of suppressing adverse effects due to thermal deformation and improving the preheating effect of fuel gas to achieve high thermal efficiency.

A combustion heater according to a first aspect of the present invention includes: a heating plate; an arrangement plate disposed to face the heating plate; an outer peripheral wall disposed along the outer circumference of the heating plate and the arrangement plate; and a partition plate for The space surrounded by the heating plate, the arrangement plate, and the outer peripheral wall is disposed opposite to the heating plate and the arrangement plate, and the introduction portion is formed by a gap with the arrangement plate, and is formed by the heating plate The gap is formed to form a lead-out portion. In addition, the combustion heater includes an inflow hole, a first plate portion that guides the fuel gas, and a fuel gas that is introduced from the first pipe portion to the introduction portion. Further, the combustion heater includes a combustion chamber disposed in a space surrounded by the heating plate, the disposition plate, and the outer peripheral wall, and the fuel gas introduced from the introduction portion is combusted and generated by the combustion. The exhaust gas is led to the lead-out portion, and the exhaust hole is provided in the heating plate or the partition plate, and the second pipe portion that guides the exhaust gas is connected, and the exhaust gas is led out from the lead portion to the second pipe portion. Further, in the partition plate, uneven portions having irregularities in the thickness direction are provided.

In the combustion heater according to the second aspect of the present invention, in the first aspect, the top of the uneven portion may be in contact with either or both of the heating plate and the arrangement plate.

In the third aspect of the present invention, in the first or second aspect, the uneven portion may extend radially from the inflow hole or the exhaust hole provided in the partition plate toward the combustion chamber.

In the third aspect of the present invention, in the third aspect, the inlet portion side of the partition plate may be provided with a flat plate in the vicinity of an inflow hole or a vent hole provided in the partition plate. The flat portion and the uneven portion may be continuously provided on the outer peripheral side of the flat plate portion.

According to a fifth aspect of the present invention, in the third aspect or the fourth aspect, the lead-out portion may have a plurality of exhaust flow paths defined in the circumferential direction according to the uneven portion, and an exhaust flow path. It may also gradually narrow as it goes from the combustion chamber side toward the exhaust hole side.

In any one of the third to fifth aspects of the present invention, the introduction portion may have a plurality of introduction channels defined in the circumferential direction according to the uneven portion, and may be introduced. The flow path may also gradually narrow as it goes from the inflow hole side toward the combustion chamber side.

According to the present invention, the adverse effect due to thermal deformation is suppressed, and the warm-up effect of the fuel gas is improved, and high thermal efficiency can be achieved.

Hereinafter, the best mode for carrying out the invention will be described in detail with reference to the drawings. Dimensions and materials shown in the following embodiments The specific numerical values and the like are merely illustrative of the present invention, and the present invention is not limited thereto unless otherwise stated. In the embodiment, elements that have substantially the same functions or configurations are denoted by the same reference numerals, and the description thereof will not be repeated.

(First embodiment: combustion heating system 100)

Fig. 1 is a perspective view showing an appearance example of the combustion heater system 100 of the first embodiment. The combustion heating system 100 of the present embodiment is a premix type that mixes city gas or the like and air as a combustion oxidant gas before being supplied to the main body container. However, the present invention is not limited to this case, and the combustion heating system 100 can also perform a diffusion type of diffusion combustion.

As shown in Fig. 1, the combustion heating system 100 is composed of a plurality of (two in the first figure) combustion heaters 100 connected in parallel, and receives a mixed gas such as a city gas and air (hereinafter referred to as The supply of "fuel gas" is burned by burning the fuel gas in the combustion heater 110, respectively. The exhaust gas generated by the combustion is recovered in the combustion heating system 100.

Fig. 2 is a view for explaining the structure of the combustion heating system 100 of the first embodiment. As shown in FIG. 2, the combustion heating system 100 includes a arranging plate 120, an outer peripheral wall 122, a partition plate 124, and a heating plate 126.

The arranging plate 120 is a flat member, and the arranging plate 120 is made of a material having high heat resistance and oxidation resistance, such as stainless steel (SUS: Stainless Used Steel) or a material having a low thermal conductivity.

The outer peripheral wall 122 is formed of a thin plate-shaped member having an outer peripheral surface which is located in the same plane shape as the outer peripheral surface of the arrangement plate 120, and is laminated on Configuration board 120. The inner circumference of the outer peripheral wall 122 has a track shape (a shape formed by two substantially parallel line segments and two arcs (semicircles) connecting the two line segments), and is disposed in the thickness direction (outer peripheral wall) Two through holes 122a penetrating through 122 and the stacking direction of the arranging plate 120.

The partition plate 124 is formed of a material having high heat resistance and oxidation resistance (for example, stainless steel) or a material having high thermal conductivity (for example, brass), similarly to the arrangement plate 120. The partition plate 124 is formed of a thin plate-shaped member having a shape other than the inner peripheral surface of the through hole 122a of the outer peripheral wall 122, and is disposed inside the outer peripheral wall 122 substantially in parallel with the arrangement plate 120. Further, in a state in which the partitioning plate 124 is housed in the through hole 122a of the outer peripheral wall 122, the outer peripheral surface of the partitioning plate 124 is separated from the inner peripheral surface of the through hole 122a by a predetermined interval.

Similarly to the arrangement plate 120, the heating plate 126 is made of a thin plate-shaped member formed of a material having high heat resistance and oxidation resistance (for example, stainless steel) or a material having high thermal conductivity (for example, brass).

The heating plate 126 has an outer shape in which the outer peripheral surface thereof is on the same plane as the outer peripheral surface of the arrangement plate 120 and the outer peripheral wall 122, and is laminated on the outer circumference 122 and the partition plate 124. At this time, the heating plate 126 and the disposition plate 120 are arranged to be substantially parallel to each other (substantially parallel for the occurrence of excess enthalpy combustion in the present embodiment). Furthermore, the outer peripheral wall 122 is disposed along the outer circumference of the heating plate 126 and the disposition plate 120. The partition plate 124 is disposed to face the heating plate 126 and the disposition plate 120 in a space surrounded by the heating plate 126, the disposition plate 120, and the outer peripheral wall 122.

The configuration plate 120, the partition plate 124, and the heating plate 126 are as long as A gap is formed between the members, and may be disposed obliquely opposite to each other. Further, the arrangement plate 120, the partition plate 124, and the heating plate 126 do not limit the thickness of the members, and are not limited to the flat plate, and may be formed into a shape having a varying thickness.

The main body container of the combustion heating system 100 is constructed by closing the upper and lower sides of the outer peripheral wall 122 by the heating plate 126 and the disposition plate 120. Further, the area of the upper and lower wall surfaces (the outer surfaces of the heating plate 126 and the arrangement plate 120) is larger than the area of the outer circumferential surface (the outer surface of the outer peripheral wall 122). In other words, the upper and lower walls occupy most of the outer surface of the body container.

Further, the combustion heating system 100 is configured by connecting two combustion heaters 100 in parallel. A flame extending portion 128 is formed at a connection portion between the two combustion heaters 100, and communicates with a sealed space in the connected combustion heater 100. However, although it is a closed space, it does not need to be completely sealed when used in a gas. In the combustion heating system 100 of the present embodiment, the flame is spread to the combustion heater 110 connected to the flame-expanding portion 128 by the ignition of the ignition device such as an igniter (not shown). And was ignited. As described above, although two combustion heaters 110 are provided in the combustion heating system 100, only two combustion heaters 110 have the same configuration. Therefore, in the following description, one of the combustion heaters 110 will be described.

Fig. 3 is a sectional view taken along line III-III of Fig. 1. As shown in FIG. 3, in the arrangement plate 120, an inflow hole 132 penetrating in the thickness direction is provided in the center portion of the combustion heater 110. The first piping portion 130 to which the flow of the fuel gas is common is connected to the inflow hole 132. The fuel gas system is directed into the body container of the combustion heater 110 via the inflow aperture 132.

In the inside of the main body container, the introduction portion 134 and the lead portion 138 are formed to be separated by the partition plate 124 and adjacent to each other. The positional relationship between the partition plate 124, the introduction portion 134, and the lead portion 138 will be described later.

The introduction portion 134 is formed by a gap between the arrangement plate 120 and the partition plate 124, and guides the fuel gas flowing in from the inflow hole 132 to the combustion chamber 136 radially.

The combustion chamber 136 is disposed in a space surrounded by the arrangement plate 120, the heating plate 126, and the outer peripheral wall 122. Further, the combustion chamber 136 faces the outer peripheral end portion of the partition plate 124 and is disposed along the outer peripheral wall 122. An ignition device (not shown) is provided at any position of the combustion chamber 136. The combustion chamber 136 burns the fuel gas introduced from the introduction portion 134, and discharges the exhaust gas generated by the combustion toward the outlet portion 138.

The lead-out portion 138 is formed by a gap between the heating plate 126 and the partition plate 124, and collects the exhaust gas generated by the combustion in the combustion chamber 136 to the center portion of the combustion heater 110.

As described above, in the main body container, the introduction portion 134 is formed adjacent to the lead portion 138. Therefore, the heat of the exhaust gas can be transmitted to the fuel gas through the partition plate 124 to preheat the fuel gas.

The radiation surface 140 is a surface on the outer side of the heating plate 126, and is heated by the exhaust gas flowing through the lead-out portion 138 or the combustion in the combustion chamber 136, and transfers the radiant heat to the object to be heated.

In the partition plate 124, an exhaust hole 142 penetrating in the thickness direction is provided at a central portion of the combustion heater 110. In the exhaust hole 142, the second pipe portion 144 is fitted to the inner peripheral portion. Emission after heating the radiating surface 140 The gas is led out of the combustion heating gas 110 via the exhaust hole 142.

The second piping portion 144 is disposed inside the first piping portion 130 . In other words, the first pipe portion 130 and the second pipe portion 144 form a double pipe. In addition, the second piping portion 144 also has a function of transmitting the heat of the exhaust gas to the fuel gas flowing through the first piping portion 130.

A portion (edge portion) of the arrangement plate 120 in which the inflow hole 132 is formed is fixed to the front end of the first pipe portion 130. The exhaust hole 142 of the partition plate 124 is fixed to the front end of the second pipe portion 144 that protrudes more than the first pipe portion 130. The arranging plate 120 is spaced apart from the partition plate 124 by a difference between the front end of the first pipe portion 130 and the front end of the second pipe portion 144.

Further, in the present embodiment, the inflow hole 132 is provided in the arrangement plate 120, and the exhaust hole 142 is provided in the partition plate 124. However, the inflow hole 132 may be disposed in the partition plate 124 , and the exhaust hole 142 may be disposed in the heating plate 126 . At this time, the first pipe portion 130 and the second pipe portion 144 may be inserted from the heating plate 126 side to the introduction portion 134 and the lead portion 138 , and the first pipe portion 130 may be disposed inside the second pipe portion 144 . Further, the first piping portion 130 and the second piping portion 144 may be provided separately. At this time, the inflow hole 132 may be disposed in any one of the arrangement plate 120 and the partition plate 124, and the exhaust hole 142 may be disposed in any of the heating plate 126 or the partition plate 124.

In the partition plate 124 of the present embodiment, the uneven portion having irregularities in the thickness direction is provided. Hereinafter, the configuration of the partition plate 124 will be described in detail using FIGS. 4A to 7B.

4A and 4B are the partition plates 124 of the first embodiment. Oblique view. Specifically, Fig. 4A shows the surface on the side of the lead-out portion 138 of the partitioning plate 124, and Fig. 4B shows the surface on the side of the introduction portion 134 of the partitioning plate 124. In FIGS. 4A and 4B, a line extending from the exhaust hole 142 into a radial shape shows the top portion 146a of the uneven portion 146, the solid line portion is shown as a convex portion, and the wavy line portion is shown as a concave portion. The uneven portion 146 extends radially from the center side of the partition plate 124 toward the outer peripheral side. In addition, in FIGS. 4A and 4B, for convenience of explanation, the description of the number of irregularities is omitted. However, the present invention is not limited thereto, and the number of the concavities and convexities is not limited in the uneven portion 146.

Fig. 5 is a front view showing a surface on the side of the lead-out portion 138 of the partitioning plate 124, and Figs. 6A to 6C are cross-sectional views of the partitioning plate 124. Specifically, FIG. 6A is a cross-sectional view taken along line VI(a) to VI(a) of FIG. 5, and FIG. 6B is a cross-sectional view taken along line VI(b) to VI(b) of FIG. 5, and Fig. 6C is a cross-sectional view taken along line VI(c) to VI(c) of Fig. 5. 6A to 6C show the top portion 146a of FIG. 5, and is a section from the solid line 160a to the solid line 160b, and shows only the partitioning plate 124 and the upper and lower heating plates 126 and the arranging plate 120. section.

In Fig. 5, a solid line extending from the exhaust hole 142 in a radial shape indicates a top portion 146a of the uneven portion 146 which is a convex portion on the side of the lead portion 138. In the fifth drawing, a dotted line extending from the exhaust hole 142 is a top portion 146a of the uneven portion 146 which is a convex portion on the side of the introduction portion 134.

As shown in FIGS. 6A and 6B, the top portion 146a of the uneven portion 146 (shown by a broken line circle) is VI(b)-VI from the side of the combustion chamber 136 of the partition plate 124 to the vent hole 142. (b) within the range of the line, It is in contact with both the heating plate 126 and the arranging plate 120.

As shown in FIG. 6C, as the VI (b)-VI (b) line passes over the exhaust hole 142 side, the unevenness of the uneven portion 146 gradually decreases. When the unevenness of the uneven portion 146 becomes small, the top portion 146a is separated from the arrangement plate 120 while maintaining contact with the heating plate 126.

As shown in FIGS. 6A and 6B, the combustion chamber 136 side of the introduction portion 134 (the outer peripheral side of the partition plate 124 is larger than the VI(b)-VI(b) line of Fig. 5) The plurality of introduction flow paths 134a defined by the uneven portion 146 in the circumferential direction are formed. Further, as shown in FIGS. 6A to 6C, in the lead-out portion 138, a plurality of exhaust gas flow paths 138a are formed from the outer peripheral end of the partition plate 124 to the exhaust hole 142, according to the unevenness. The portion 146 is defined in the circumferential direction.

The introduction portion 134 is in the vicinity of the exhaust hole 142 of the partition plate 124 (that is, in the vicinity of the inflow hole 132 of the arrangement plate 120), and is not completely defined by the uneven portion 146. The introduction flow path 134a is formed at an intermediate position from the inflow hole 132 toward the combustion chamber 136.

Further, the exhaust flow path 138a gradually narrows toward the exhaust hole 142 from the combustion chamber 136 side of the partition plate 124.

Next, the flow of the fuel gas and the exhaust gas from the introduction portion 134 to the lead portion 138 will be specifically described. 7A and 7B are diagrams for explaining the flow of fuel gas and exhaust gas. Specifically, in Fig. 7A, an enlarged view of a portion on the left side of the sectional view of Fig. 3 is shown, and in Fig. 7B, a sectional view of VII(b)-VII(b) of Fig. 7A is shown. Figure. Furthermore, in Figure 7A, the reverse white arrow indicates the flow of fuel gas. The arrow painted with gray indicates the flow of the exhaust gas. In Fig. 7B, the arrow marked with black indicates the movement of heat, while the symbol 150a indicates the flow direction of the fuel gas, and the symbol 150b indicates the flow of the exhaust gas. direction. However, in the seventh drawing, the reverse arrow indicated by a broken line indicates the flow of the fuel gas hidden on the back side of the partition plate 124.

As shown in FIGS. 7A and 7B, the introduction flow path 134a and the exhaust flow path 138a are formed by sandwiching the uneven portion 146 of the partition plate 124. The fuel gas that has flowed into the introduction portion 134 flows toward the combustion chamber 136 along the introduction flow path 134a.

The fuel gas system collides with the outer peripheral wall 122 at the combustion chamber 136 to lower the flow rate, and after combustion in the combustion chamber 136, a high-temperature exhaust gas is formed. The exhaust gas system flows toward the exhaust hole 142 in the gradually narrowing exhaust flow path 138a. At this time, the heat of the exhaust gas is transferred to the radiating surface 140 of the heating plate 126.

Further, as shown in FIG. 7B, the heat of the exhaust gas passing through the exhaust flow path 138a is transferred to the fuel gas passing through the introduction flow path 134a via the uneven portion 146 of the partition plate 124. The exhaust gas flowing through the exhaust flow path 138a and the fuel gas flowing through the introduction flow path 134a are arranged to surround the uneven portion 146 of the partition plate 124 and to the left and right (the opposing direction of the heating plate 126 and the arrangement plate 120). Counter flow. Therefore, it is possible to efficiently preheat the fuel gas by utilizing the heat of the exhaust gas, and it is possible to achieve high thermal efficiency. By performing combustion (excess enthalpy combustion) after preheating the fuel gas, combustion of the fuel gas can be stabilized, and the concentration of CO (carbon monoxide) generated by incomplete combustion can be suppressed to an extremely low concentration.

As described above, the combustion heater 110 of the present embodiment absorbs the thermal deformation of the partition plate 124 by the uneven portion 146 provided on the partition plate 124. Therefore, even if the partition plate 124 is temporarily thermally deformed, thermal deformation of the introduction portion 134 and/or the lead portion 138 due to the shaking can be suppressed. Therefore, in the combustion heater 110, the thickness of the partition plate 124 can be made thin, and the warm-up effect of the fuel gas can be improved. Further, by providing the uneven portion 146 on the partition plate 124, the area in which the fuel gas and the exhaust gas come into contact with the partition plate 124 is increased. Therefore, heat transfer from the exhaust gas to the fuel gas can be promoted, and the warm-up effect can be further enhanced.

Further, the exhaust flow path 138a is narrowed toward the exhaust hole 142, thereby accelerating the flow rate of the exhaust gas, and increasing the heat transfer rate from the exhaust gas to the heating plate 126 and the partition plate 124. Therefore, the combustion heater 110 can improve the heating effect of the radiation surface 140 and the warm-up effect of the fuel gas.

Further, the top portion 146a of the uneven portion 146 is in contact with the heating plate 126 and the disposition plate 120, so that the fuel heater 110 can suppress the wobble caused by the thermal deformation of the partition plate 124. Therefore, the thickness of the partitioning plate 124 can be made thinner, and the warm-up effect of the fuel gas can be improved.

Further, the partition plate 214 is in the vicinity of the inflow hole 132, and only contacts the side of the heating plate 126 where the unevenness of the uneven portion 146 is small, and the flow path of the introduction portion 134 is not reduced. Therefore, even if the partition plate 124 is temporarily thermally deformed due to long-term use, it is possible to suppress variations in the supply amount of the fuel gas in the circumferential direction due to the narrowing of the flow path of the introduction portion 134 in the vicinity of the inflow hole 132.

(Second embodiment)

Next, the partition plate 224 of the second embodiment will be described. in In the second embodiment, the partition plates 224 are different from each other in comparison with the first embodiment. Therefore, the description of the configuration similar to that of the first embodiment will be omitted, and only the partition plate 224 having a different configuration will be described.

8A and 8B are perspective views of the partition plate 224 of the second embodiment. Specifically, Fig. 8A shows the surface on the side of the lead-out portion 138 of the partitioning plate 224, and Fig. 8B shows the surface on the side of the introduction portion 134 of the partitioning plate 224.

In the partitioning plate 224, a flat plate-shaped flat plate portion 250 is provided over a certain range in the vicinity of the center of the partitioning plate 224. The uneven portion 246 and the top portion 246 thereof are continuously provided on the outer peripheral side of the flat plate portion 250. As shown in Figs. 8A and 8B, the solid line portion of the top portion 246a is a convex portion, and the wavy line portion is a concave portion.

It is assumed that, in the vicinity of the inflow hole 132 of the introduction portion 134, when the top portion 246a of the uneven portion 264 comes into contact with the disposition plate 120 to define the introduction flow path 134a, thermal deformation is also caused in the partition plate 224 due to long-term use. Thereby, the vicinity of the inflow hole 132 is extremely narrowed, and there is a possibility that the supply amount of the fuel gas in the circumferential direction may vary. In the first embodiment, the unevenness of the uneven portion 146 is reduced to avoid the above-described state of affairs. In the present embodiment, the flat plate portion 250 is provided in the partition plate 224, and the interval (height) of the introduction portion 134 near the center in the circumferential direction is ensured to be constant. Therefore, it is possible to suppress variations in the supply amount of the fuel gas in the circumferential direction.

(Third embodiment)

Next, the partition plate 324 of the third embodiment will be described. In the third embodiment, the partition plate 324 is compared with the first embodiment. Not the same. Therefore, the description of the configuration similar to that of the third embodiment will be omitted, and only the partition plate 324 having a different configuration will be described.

Fig. 9 is a front view of the partition plate 324 of the third embodiment, and Figs. 10A to 10C are cross-sectional views of the partition plate 324 of the third embodiment. Specifically, FIG. 10A is a cross-sectional view taken along line X(a)-X(a) of FIG. 9, and FIG. 10B is a cross-sectional view taken along line X(b)-X(b) of FIG. Fig. 10C is a cross-sectional view taken along the line X(c)-X(c) of Fig. 9. Further, in FIGS. 10A to 10C, the top portion 346a shown in FIG. 9 is shown, and is a section from the solid line 360a to the solid line 360b, and only the partition plate 124 is shown. A cross section of the heating plate 126 and the configuration plate 120.

In the same manner as in the fifth drawing, in the ninth drawing, the solid line extending from the exhaust hole 142 is a vertical line 346a which is a convex portion on the side of the lead portion 138 in the uneven portion 346. In the ninth drawing, a dotted line extending from the exhaust hole 142 is a top portion 346a of the uneven portion 346 which is a convex portion on the side of the introduction portion 134. As shown in FIG. 10B and FIG. 10C, the portion of the uneven portion 346 which is a convex portion on the side of the introduction portion 134 is a face portion, and the end portion of the surface is the top portion 346a on the side of the introduction portion 134 (at 10B). In the figure and in Fig. 10C, the top portion 346a) is shown by a dotted circle.

As shown in FIG. 10A, in the flat plate portion 350 of the partition plate 324, since the uneven portion is not provided, the introduction flow path 134a is not defined in the introduction portion 134. As shown in FIGS. 10B and 10C, the height (depth) of the uneven portion 346 gradually increases from the inflow hole 132 toward the combustion chamber 136, and the top portion 346a of the uneven portion 346 and the disposition plate 120 and the heating are formed. Plate 126 is in contact. Thereby, the introduction flow path 134a and the exhaust flow path 138a are formed.

As shown in FIGS. 10B and 10C, the introduction flow path 134a gradually narrows from the inflow hole 132 side toward the combustion chamber 136 side.

Since the introduction flow path 134a is narrowed toward the outer circumference, backfire can be prevented. In addition, since the introduction flow path 134a in the vicinity of the center is large, even if thermal deformation is temporarily caused in the partition plate 324 due to long-term use, the flow path is not extremely narrowed. Therefore, the combustion heater 110 is less likely to cause variations in the supply amount of the fuel gas in the circumferential direction.

In the second embodiment and the third embodiment, the same operational effects as those of the first embodiment can be achieved. That is, the thermal deformation of the partition plates 224, 324 is absorbed and suppressed by the uneven portions 246, 346 provided on the partition plates 224, 324. Therefore, the thickness of the partition plates 224, 324 can be made thin, and the warm-up effect of the fuel gas can be improved. Further, the area where the fuel gas and the exhaust gas come into contact with the partition plates 224 and 324 is increased by the uneven portions 246 and 346. Therefore, the heat transfer from the exhaust gas to the fuel gas is promoted, and the preheating effect is further enhanced.

Further, the partitioning plate is not limited to, for example, a wave plate in which the unevenness is smoothly raised, and the unevenness which is bent in an arbitrary direction may be formed. Further, the direction of the uneven portion is not limited to a radial shape, and may be a roll shape and may be formed in any direction. Further, the top of the uneven portion may not be in contact with any of the heating plate 126 and the placement plate 120.

Further, in the above embodiment, the combustion chamber 136 is formed along the outer peripheral wall 122, but is not limited thereto. The combustion chamber 136 is only required to be surrounded by the outer peripheral wall 122, the heating plate 126, and the disposition plate 120. You can do it in between. However, in order to sufficiently ensure the warm-up effect of the fuel gas due to the exhaust gas, the combustion chamber 136 is preferably provided with a space between the heating plate 126 and the partition plate, or the partition plate and the configuration plate 120, for example. The ratio in the space between the spaces is closer to any of the spaces of the outer peripheral wall 122 from the intermediate position provided in the inflow hole 132 of the arrangement plate 120 to the outer peripheral wall 122.

Further, in the above embodiment, the combustion heating system 100 in which the two combustion heaters 110 are connected is exemplified, but the present invention is not limited thereto. The single combustion heater 100 can also be used without using the combustion heating system 100.

The preferred embodiments of the present invention have been described above with reference to the drawings, but the present invention is not limited to the embodiments. It is a matter of course that the present invention is within the technical scope of the present invention as long as it is within the scope of the patent application.

(industrial availability)

According to the combustion heater of the present invention, it is possible to obtain a combustion heater which can suppress the adverse effects due to thermal deformation, improve the warm-up effect of the fuel gas, and realize high thermal efficiency.

100‧‧‧Combustion heating system

110‧‧‧ burning heater

120‧‧‧Configuration Board

122‧‧‧ peripheral wall

122a‧‧‧through holes

124,224,324‧‧‧ partition board

126‧‧‧heating plate

128‧‧‧ Flame Burning Department

130‧‧‧1st piping department

132‧‧‧Inflow hole

134‧‧‧Importing Department

136‧‧ ‧ combustion chamber

138‧‧‧Exporting Department

140‧‧‧radiation surface

142‧‧‧ venting holes

144‧‧‧2nd piping department

146,246,346‧‧‧

250,350‧‧‧ flat section

122a‧‧‧through holes

134a‧‧‧Introduction flow path

138a‧‧‧Exhaust flow path

146a, 246a, 346a‧‧‧ top

150a‧‧‧Flow direction of fuel gas

150b‧‧‧Flow direction of exhaust gas

Fig. 1 is a perspective view showing an appearance example of a combustion heater system according to a first embodiment of the present invention.

Fig. 2 is a view for explaining the structure of a combustion heating system according to a first embodiment of the present invention.

Fig. 3 is a sectional view taken along line III-III of Fig. 1.

Fig. 4A is a perspective view of the partition plate according to the first embodiment of the present invention, and shows a surface on the side of the outlet portion of the partition plate.

Fig. 4B is a perspective view of the partition plate according to the first embodiment of the present invention, and shows a surface on the side of the introduction portion side of the partition plate.

Fig. 5 is a front elevational view showing a partitioning plate according to the first embodiment of the present invention.

Fig. 6A is a cross-sectional view showing a partition plate according to the first embodiment of the present invention, and is a cross-sectional view taken along line VI(a) to VI(a) of Fig. 5.

Fig. 6B is a cross-sectional view of the partition plate according to the first embodiment of the present invention, and is a cross-sectional view taken along line VI(b) to VI(b) of Fig. 5.

Fig. 6C is a cross-sectional view showing a partition plate according to the first embodiment of the present invention, and is a cross-sectional view taken along line VI(c) to VI(c) of Fig. 5.

Fig. 7A is a view for explaining the flow of the fuel gas and the exhaust gas, and shows an enlarged view of a portion on the left side of the cross-sectional view of Fig. 3.

Fig. 7B is a view for explaining the flow of the fuel gas and the exhaust gas, and shows a sectional view taken along line VII(b)-VII(b) of Fig. 7A.

Fig. 8A is a perspective view showing a partitioning plate according to a second embodiment of the present invention, and showing a surface on the side of the outlet portion of the partitioning plate.

Fig. 8B is a perspective view of the partition plate according to the second embodiment of the present invention, and shows a surface on the side of the outlet portion of the partition plate.

Fig. 9 is a front elevational view showing a partitioning plate according to a third embodiment of the present invention.

Fig. 10A is a cross-sectional view showing a partition plate according to a third embodiment of the present invention, and is a cross-sectional view taken along the line X(a)-X(a) of Fig. 9.

Figure 10B is a cross section of the partition plate of the third embodiment of the present invention. Fig. 5 is a sectional view taken along the line X(b)-X(b) of Fig. 9.

Fig. 10C is a cross-sectional view showing a partition plate according to a third embodiment of the present invention, and is a cross-sectional view taken along the line X(c)-X(c) of Fig. 9.

110‧‧‧ burning heater

120‧‧‧Configuration Board

122‧‧‧ peripheral wall

124‧‧‧ partition board

126‧‧‧heating plate

130‧‧‧1st piping department

132‧‧‧Inflow hole

134‧‧‧Importing Department

136‧‧ ‧ combustion chamber

138‧‧‧Exporting Department

140‧‧‧radiation surface

142‧‧‧ venting holes

144‧‧‧2nd piping department

Claims (11)

A combustion heater includes: a heating plate; a disposition plate disposed to face the heating plate; an outer peripheral wall disposed along a circumference of the heating plate and the arrangement plate; and a partition plate on the heating plate And the space surrounded by the arrangement plate and the outer peripheral wall is disposed to face the heating plate and the arrangement plate, and the introduction portion is formed by a gap with the arrangement plate, and is formed by the heating plate The gap is formed between the partitioning portion, the inflow hole is provided in the partition plate or the partition plate, and the first pipe portion for guiding the fuel gas is connected, and the fuel gas is introduced from the first pipe portion to the introduction portion; The chamber is disposed in a space surrounded by the heating plate, the arrangement plate, and the outer peripheral wall, and the fuel gas introduced from the introduction portion is combusted, and the exhaust gas generated by the combustion is performed toward the deriving portion. And a vent hole provided in the heating plate or the partition plate, and a second pipe portion for guiding the exhaust gas is connected, and the row is arranged Deriving the gas derived from the second portion to the pipe portion; wherein the partition plate has a wave-shaped concavo-convex shape the concavo-convex portion in the thickness direction. A combustion heater as claimed in claim 1, wherein the front The top of the uneven portion is in contact with either or both of the heating plate and the arrangement plate. The combustion heater according to the first aspect of the invention, wherein the uneven portion extends radially from the inflow hole or the exhaust hole provided in the partition plate toward the combustion chamber. The combustion heater according to claim 2, wherein the uneven portion extends radially from the inflow hole or the exhaust hole provided in the partition plate toward the combustion chamber. The combustion heater according to the third aspect of the invention, wherein the inlet portion of the partition plate is provided with a flat plate shape in the vicinity of the inflow hole or the exhaust hole provided in the partition plate In the flat plate portion, the uneven portion is continuously provided on the outer peripheral side of the flat plate portion. The combustion heater according to the fourth aspect of the invention, wherein the inlet portion of the partition plate is provided with a flat plate shape in the vicinity of the inflow hole or the exhaust hole provided in the partition plate In the flat plate portion, the uneven portion is continuously provided on the outer peripheral side of the flat plate portion. The combustion heater according to claim 3, wherein the lead-out portion has a plurality of exhaust gas passages defined in a circumferential direction according to the uneven portion, and the exhaust gas flow path follows the combustion The chamber side gradually narrows toward the side of the exhaust hole. A combustion heater as claimed in claim 4, wherein The lead-out portion has a plurality of exhaust flow paths defined in the circumferential direction by the uneven portion, and the exhaust flow path gradually narrows toward the exhaust hole side from the combustion chamber side. The combustion heater according to claim 5, wherein the lead-out portion has a plurality of exhaust gas passages defined in a circumferential direction according to the uneven portion, and the exhaust gas flow path follows the combustion The chamber side gradually narrows toward the side of the exhaust hole. The combustion heater according to claim 6, wherein the lead-out portion has a plurality of exhaust gas passages defined in the circumferential direction according to the uneven portion, and the exhaust gas flow path follows the combustion The chamber side gradually narrows toward the side of the exhaust hole. The combustion heater according to any one of claims 3 to 10, wherein the introduction portion has a plurality of introduction flow paths defined in the circumferential direction by the uneven portion, and the introduction flow path The thickness gradually decreases from the side of the inflow hole toward the side of the combustion chamber.